i own an 84 k5 with 305/4spd great mechaniclly, not so great visually rust in usual places of which some i repaired. have opportunity to purchase 73 sierra 350/ 4spd. lots of new parts about where my 84 was before i repaired body. 73 has what i consider a bad interior the 84 has a mint interior. i will use either truck everyday to transport to work and kids games. like the 73 full convert option. which should i go with. will get the 73 for $500 when i sell my truck.